#include <stdio.h>
void fun (int x,int y );
int main()
{ 
	int x=5,y=3; 
	fun(x,y);
	printf("%d,%d\n",x,y);
	return 0;
}
void fun (int x,int y )
{ 
	x=x+y;
	y=x-y;
	x=x-y;
	printf("%d,%d\n",x,y); 
}